Abstract
Chemotherapy dose adjustments in colorectal cancer are usually based on body surface area (BSA). The goal of this study was to investigate patients with nutritional disorder who developed early peripheral neuropathy due to inappropriate dose adjustment of oxaliplatin. The study subjects were 88 patients with advanced or recurrent colorectal cancer who underwent chemotherapy with oxaliplatin. The psoas muscle area (PMA) was used as a nutritional index. Mild (grades 0-1, MN group) and severe (grades 2-3, SN group) peripheral neuropathy was defined using neurotoxicity criteria of Debiopharm. Severe peripheral neuropathy developed in 29 patients (33.0%). The total oxaliplatin dose/PMA was significantly higher for the SN group (107.6±8.5 mg/cm2) and compared with the MN group (53.8±6.0 mg/cm2) in univariate (p<0.0001) and multivariate (p=0.012) analyses. In order to prevent peripheral neuropathy from chemotherapy for colorectal cancer, dose adjustment of oxaliplatin should be based on PMA, in addition to BSA.
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